Results 251 to 260 of about 11,759,117 (298)
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2012
In his 1913 letter to G.H. Hardy, Ramanujan gave an asymptotic formula for the nth coefficient of the inverse of a theta function. This was the earliest result obtained using the circle method, the rudiments of which Ramanujan seemed to have had before his journey to England.
M. Ram Murty, V. Kumar Murty
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In his 1913 letter to G.H. Hardy, Ramanujan gave an asymptotic formula for the nth coefficient of the inverse of a theta function. This was the earliest result obtained using the circle method, the rudiments of which Ramanujan seemed to have had before his journey to England.
M. Ram Murty, V. Kumar Murty
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An Improved Method for Circle Detection
2008The algorithm of Hough transform for edge detection is very useful in digital image processing because of its insensitivity to the noises in the source image, so perfect results can be achieved when the dimension of parameters is less than two. However, the difficulty and complexity of calculation will be increased if the dimension of parameters is ...
Cheng Xing, Jianqiang Wang
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Discrete Mathematics and Applications, 1991
See the review in Zbl 0711.11036.
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See the review in Zbl 0711.11036.
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An efficient method for multiple-circle detection
[1990] Proceedings Third International Conference on Computer Vision, 2002A novel approach for circle detection based on the Hough transform is presented. It avoids the use of trigonometric functions in the transform equations. Instead of using traditional circle parameterization, which involves gradient direction information, this method uses three edge points to accumulate evidence for circle centers.
Xing Cao, Farzin Deravi
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1985
We mentioned in Chapter 1 that the number r s (n) of solutions of the Diophantine equation $$ \sum\limits_{{k = 1}}^s {x_i^2} = n $$ (12.1) is the coefficient of x n in the Taylor expansion of the function \( 1 + \sum\nolimits_{{n = 1}}^{\infty } {{r_s}(n){x^n}} \).
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We mentioned in Chapter 1 that the number r s (n) of solutions of the Diophantine equation $$ \sum\limits_{{k = 1}}^s {x_i^2} = n $$ (12.1) is the coefficient of x n in the Taylor expansion of the function \( 1 + \sum\nolimits_{{n = 1}}^{\infty } {{r_s}(n){x^n}} \).
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An improved method for circle detection
2015A split and merge method for detecting circular objects has been proposed in this paper. In the split stage, curve segmentation is performed by using a dominant point detection method. The segments are then classified as linear or nonlinear segments by the linearity criterion.
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Global optimization method for finding dense packings of equal circles in a circle
European Journal of Operational Research, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wenqi Huang 0001, Tao Ye 0005
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An Improved Circle Detection Method Based on Right Triangles Inscribed in a Circle
2009 WRI World Congress on Computer Science and Information Engineering, 2009An efficient method of detecting circles, called Semi-Random Detection (SRD) based on Right Triangles Inscribed in a Circle (RTIC), is presented. Above all, a 2D compressed Array Space based on the Positions of Valid Pixels (ASPVP) is constructed. And then four points searching method is used to search the corresponding right triangles. After employing
Fei Shang +3 more
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Classification by causes of dark circles and appropriate evaluation method of dark circles
Skin Research and Technology, 2015BackgroundDark circles refer to a symptom that present darkness under the eyes. Because of improvement in the quality of life, the dark circles have been recognized as one of major cosmetic concerns. However, it is not easy to classify the dark circles because they have various causes.MethodsTo select suitable instruments and detailed evaluation items,
S R, Park +9 more
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Renormalization Group Methods for Circle Mappings
1986The topic of this series of lectures is the theory of circle mappings with emphasis on recently developed ideas on the application of renormalization group methods to the analysis of parameter dependence of circle mappings. Circle mappings arise naturally in the study of flows which admit invariant two-dimensional tori.
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